Huang, Jun YuJun YuHuangHung, Hsiao ChunHsiao ChunHungHsu, Kung ChiKung ChiHsuChen, Chia HsunChia HsunChenLee, Pei HsiPei HsiLeeLin, Hung YiHung YiLinLin, Bo YenBo YenLinMAN-KIT LEUNGChiu, Tien LungTien LungChiuJIUN-HAW LEEYUH-RENN WU2022-12-192022-12-192022-01-01978166547899121583234https://scholars.lib.ntu.edu.tw/handle/123456789/626617In this work, we developed a both stable and time-dependent exciton diffusion model including singlet and triplet exciton coupled with a modified Poisson & drift-diffusion solver to demonstrate the mechanism of triplet-triplet fusion (TTF) OLEDs. Using this modified simulator, we can demonstrate the characteristics of OLEDs including current-voltage curve, quantum efficiency performance, time-resolved electroluminescence spectrum, and electric profile...etc. Also, this solver can be used to explain the mechanism of hyper-TTF OLEDs, and analysis the loss from different exciton mechanism. Furthermore, we can do further optimization for TTF-OLEDs to achieve an internal quantum efficiency increasing of 23% (from 29% to 36%).enDevice Modeling | Exciton Diffusion Model | Organic Material | Poisson-Drift-Diffusion | TTF-OLEDsconference paper10.1109/NUSOD54938.2022.98947432-s2.0-85139092614https://api.elsevier.com/content/abstract/scopus_id/85139092614